Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform updates from Arnd Bergmann:
 "Most of the commits are for defconfig changes, to enable newly added
  drivers or features that people have started using. For the changed
  lines lines, we have mostly cleanups, the affected platforms are OMAP,
  Versatile, EP93xx, Samsung, Broadcom, i.MX, and Actions.

  The largest single change is the introduction of the TI "sysc" bus
  driver, with the intention of cleaning up more legacy code.

  Two new SoC platforms get added this time:

   - Allwinner R40 is a modernized version of the A20 chip, now with a
     Quad-Core ARM Cortex-A7. According to the manufacturer, it is
     intended for "Smart Hardware"

   - Broadcom Hurricane 2 (Aka Strataconnect BCM5334X) is a family of
     chips meant for managed gigabit ethernet switches, based around a
     Cortex-A9 CPU.

  Finally, we gain SMP support for two platforms: Renesas R-Car E2 and
  Amlogic Meson8/8b, which were previously added but only supported
  uniprocessor operation"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (118 commits)
  ARM: multi_v7_defconfig: Select RPMSG_VIRTIO as module
  ARM: multi_v7_defconfig: enable CONFIG_GPIO_UNIPHIER
  arm64: defconfig: enable CONFIG_GPIO_UNIPHIER
  ARM: meson: enable MESON_IRQ_GPIO in Kconfig for meson8b
  ARM: meson: Add SMP bringup code for Meson8 and Meson8b
  ARM: smp_scu: allow the platform code to read the SCU CPU status
  ARM: smp_scu: add a helper for powering on a specific CPU
  dt-bindings: Amlogic: Add Meson8 and Meson8b SMP related documentation
  ARM: OMAP3: Delete an unnecessary variable initialisation in omap3xxx_hwmod_init()
  ARM: OMAP3: Use common error handling code in omap3xxx_hwmod_init()
  ARM: defconfig: select the right SX150X driver
  arm64: defconfig: Enable QCOM_IOMMU
  arm64: Add ThunderX drivers to defconfig
  arm64: defconfig: Enable Tegra PCI controller
  cpufreq: imx6q: Move speed grading check to cpufreq driver
  arm64: defconfig: re-enable Qualcomm DB410c USB
  ARM: configs: stm32: Add MDMA support in STM32 defconfig
  ARM: imx: Enable cpuidle for i.MX6DL starting at 1.1
  bus: ti-sysc: Fix unbalanced pm_runtime_enable by adding remove
  bus: ti-sysc: mark PM functions as __maybe_unused
  ...

1 files changed, 109 insertions, 185 deletions

diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c
index acbede082b5b..d45cbfdb4be6 100644
--- a/arch/arm/mach-omap2/omap_device.c
+++ b/arch/arm/mach-omap2/omap_device.c
@@ -35,6 +35,8 @@
 #include <linux/pm_domain.h>
 #include <linux/pm_runtime.h>
 #include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
 #include <linux/notifier.h>
 
 #include "common.h"
@@ -309,88 +311,6 @@ int omap_device_get_context_loss_count(struct platform_device *pdev)
 }
 
 /**
- * omap_device_count_resources - count number of struct resource entries needed
- * @od: struct omap_device *
- * @flags: Type of resources to include when counting (IRQ/DMA/MEM)
- *
- * Count the number of struct resource entries needed for this
- * omap_device @od.  Used by omap_device_build_ss() to determine how
- * much memory to allocate before calling
- * omap_device_fill_resources().  Returns the count.
- */
-static int omap_device_count_resources(struct omap_device *od,
-				       unsigned long flags)
-{
-	int c = 0;
-	int i;
-
-	for (i = 0; i < od->hwmods_cnt; i++)
-		c += omap_hwmod_count_resources(od->hwmods[i], flags);
-
-	pr_debug("omap_device: %s: counted %d total resources across %d hwmods\n",
-		 od->pdev->name, c, od->hwmods_cnt);
-
-	return c;
-}
-
-/**
- * omap_device_fill_resources - fill in array of struct resource
- * @od: struct omap_device *
- * @res: pointer to an array of struct resource to be filled in
- *
- * Populate one or more empty struct resource pointed to by @res with
- * the resource data for this omap_device @od.  Used by
- * omap_device_build_ss() after calling omap_device_count_resources().
- * Ideally this function would not be needed at all.  If omap_device
- * replaces platform_device, then we can specify our own
- * get_resource()/ get_irq()/etc functions that use the underlying
- * omap_hwmod information.  Or if platform_device is extended to use
- * subarchitecture-specific function pointers, the various
- * platform_device functions can simply call omap_device internal
- * functions to get device resources.  Hacking around the existing
- * platform_device code wastes memory.  Returns 0.
- */
-static int omap_device_fill_resources(struct omap_device *od,
-				      struct resource *res)
-{
-	int i, r;
-
-	for (i = 0; i < od->hwmods_cnt; i++) {
-		r = omap_hwmod_fill_resources(od->hwmods[i], res);
-		res += r;
-	}
-
-	return 0;
-}
-
-/**
- * _od_fill_dma_resources - fill in array of struct resource with dma resources
- * @od: struct omap_device *
- * @res: pointer to an array of struct resource to be filled in
- *
- * Populate one or more empty struct resource pointed to by @res with
- * the dma resource data for this omap_device @od.  Used by
- * omap_device_alloc() after calling omap_device_count_resources().
- *
- * Ideally this function would not be needed at all.  If we have
- * mechanism to get dma resources from DT.
- *
- * Returns 0.
- */
-static int _od_fill_dma_resources(struct omap_device *od,
-				      struct resource *res)
-{
-	int i, r;
-
-	for (i = 0; i < od->hwmods_cnt; i++) {
-		r = omap_hwmod_fill_dma_resources(od->hwmods[i], res);
-		res += r;
-	}
-
-	return 0;
-}
-
-/**
  * omap_device_alloc - allocate an omap_device
  * @pdev: platform_device that will be included in this omap_device
  * @oh: ptr to the single omap_hwmod that backs this omap_device
@@ -407,8 +327,7 @@ struct omap_device *omap_device_alloc(struct platform_device *pdev,
 {
 	int ret = -ENOMEM;
 	struct omap_device *od;
-	struct resource *res = NULL;
-	int i, res_count;
+	int i;
 	struct omap_hwmod **hwmods;
 
 	od = kzalloc(sizeof(struct omap_device), GFP_KERNEL);
@@ -424,74 +343,6 @@ struct omap_device *omap_device_alloc(struct platform_device *pdev,
 
 	od->hwmods = hwmods;
 	od->pdev = pdev;
-
-	/*
-	 * Non-DT Boot:
-	 *   Here, pdev->num_resources = 0, and we should get all the
-	 *   resources from hwmod.
-	 *
-	 * DT Boot:
-	 *   OF framework will construct the resource structure (currently
-	 *   does for MEM & IRQ resource) and we should respect/use these
-	 *   resources, killing hwmod dependency.
-	 *   If pdev->num_resources > 0, we assume that MEM & IRQ resources
-	 *   have been allocated by OF layer already (through DTB).
-	 *   As preparation for the future we examine the OF provided resources
-	 *   to see if we have DMA resources provided already. In this case
-	 *   there is no need to update the resources for the device, we use the
-	 *   OF provided ones.
-	 *
-	 * TODO: Once DMA resource is available from OF layer, we should
-	 *   kill filling any resources from hwmod.
-	 */
-	if (!pdev->num_resources) {
-		/* Count all resources for the device */
-		res_count = omap_device_count_resources(od, IORESOURCE_IRQ |
-							    IORESOURCE_DMA |
-							    IORESOURCE_MEM);
-	} else {
-		/* Take a look if we already have DMA resource via DT */
-		for (i = 0; i < pdev->num_resources; i++) {
-			struct resource *r = &pdev->resource[i];
-
-			/* We have it, no need to touch the resources */
-			if (r->flags == IORESOURCE_DMA)
-				goto have_everything;
-		}
-		/* Count only DMA resources for the device */
-		res_count = omap_device_count_resources(od, IORESOURCE_DMA);
-		/* The device has no DMA resource, no need for update */
-		if (!res_count)
-			goto have_everything;
-
-		res_count += pdev->num_resources;
-	}
-
-	/* Allocate resources memory to account for new resources */
-	res = kzalloc(sizeof(struct resource) * res_count, GFP_KERNEL);
-	if (!res)
-		goto oda_exit3;
-
-	if (!pdev->num_resources) {
-		dev_dbg(&pdev->dev, "%s: using %d resources from hwmod\n",
-			__func__, res_count);
-		omap_device_fill_resources(od, res);
-	} else {
-		dev_dbg(&pdev->dev,
-			"%s: appending %d DMA resources from hwmod\n",
-			__func__, res_count - pdev->num_resources);
-		memcpy(res, pdev->resource,
-		       sizeof(struct resource) * pdev->num_resources);
-		_od_fill_dma_resources(od, &res[pdev->num_resources]);
-	}
-
-	ret = platform_device_add_resources(pdev, res, res_count);
-	kfree(res);
-
-	if (ret)
-		goto oda_exit3;
-
-have_everything:
 	pdev->archdata.od = od;
 
 	for (i = 0; i < oh_cnt; i++) {
@@ -501,8 +352,6 @@ have_everything:
 
 	return od;
 
-oda_exit3:
-	kfree(hwmods);
 oda_exit2:
 	kfree(od);
 oda_exit1:
@@ -522,6 +371,93 @@ void omap_device_delete(struct omap_device *od)
 }
 
 /**
+ * omap_device_copy_resources - Add legacy IO and IRQ resources
+ * @oh: interconnect target module
+ * @pdev: platform device to copy resources to
+ *
+ * We still have legacy DMA and smartreflex needing resources.
+ * Let's populate what they need until we can eventually just
+ * remove this function. Note that there should be no need to
+ * call this from omap_device_build_from_dt(), nor should there
+ * be any need to call it for other devices.
+ */
+static int
+omap_device_copy_resources(struct omap_hwmod *oh,
+			   struct platform_device *pdev)
+{
+	struct device_node *np, *child;
+	struct property *prop;
+	struct resource *res;
+	const char *name;
+	int error, irq = 0;
+
+	if (!oh || !oh->od || !oh->od->pdev) {
+		error = -EINVAL;
+		goto error;
+	}
+
+	np = oh->od->pdev->dev.of_node;
+	if (!np) {
+		error = -ENODEV;
+		goto error;
+	}
+
+	res = kzalloc(sizeof(*res) * 2, GFP_KERNEL);
+	if (!res)
+		return -ENOMEM;
+
+	/* Do we have a dts range for the interconnect target module? */
+	error = omap_hwmod_parse_module_range(oh, np, res);
+
+	/* No ranges, rely on device reg entry */
+	if (error)
+		error = of_address_to_resource(np, 0, res);
+	if (error)
+		goto free;
+
+	/* SmartReflex needs first IO resource name to be "mpu" */
+	res[0].name = "mpu";
+
+	/*
+	 * We may have a configured "ti,sysc" interconnect target with a
+	 * dts child with the interrupt. If so use the first child's
+	 * first interrupt for "ti-hwmods" legacy support.
+	 */
+	of_property_for_each_string(np, "compatible", prop, name)
+		if (!strncmp("ti,sysc-", name, 8))
+			break;
+
+	child = of_get_next_available_child(np, NULL);
+
+	if (name)
+		irq = irq_of_parse_and_map(child, 0);
+	if (!irq)
+		irq = irq_of_parse_and_map(np, 0);
+	if (!irq) {
+		error = -EINVAL;
+		goto free;
+	}
+
+	/* Legacy DMA code needs interrupt name to be "0" */
+	res[1].start = irq;
+	res[1].end = irq;
+	res[1].flags = IORESOURCE_IRQ;
+	res[1].name = "0";
+
+	error = platform_device_add_resources(pdev, res, 2);
+
+free:
+	kfree(res);
+
+error:
+	WARN(error, "%s: %s device %s failed: %i\n",
+	     __func__, oh->name, dev_name(&pdev->dev),
+	     error);
+
+	return error;
+}
+
+/**
  * omap_device_build - build and register an omap_device with one omap_hwmod
  * @pdev_name: name of the platform_device driver to use
  * @pdev_id: this platform_device's connection ID
@@ -540,45 +476,24 @@ struct platform_device __init *omap_device_build(const char *pdev_name,
 						 struct omap_hwmod *oh,
 						 void *pdata, int pdata_len)
 {
-	struct omap_hwmod *ohs[] = { oh };
-
-	if (!oh)
-		return ERR_PTR(-EINVAL);
-
-	return omap_device_build_ss(pdev_name, pdev_id, ohs, 1, pdata,
-				    pdata_len);
-}
-
-/**
- * omap_device_build_ss - build and register an omap_device with multiple hwmods
- * @pdev_name: name of the platform_device driver to use
- * @pdev_id: this platform_device's connection ID
- * @oh: ptr to the single omap_hwmod that backs this omap_device
- * @pdata: platform_data ptr to associate with the platform_device
- * @pdata_len: amount of memory pointed to by @pdata
- *
- * Convenience function for building and registering an omap_device
- * subsystem record.  Subsystem records consist of multiple
- * omap_hwmods.  This function in turn builds and registers a
- * platform_device record.  Returns an ERR_PTR() on error, or passes
- * along the return value of omap_device_register().
- */
-struct platform_device __init *omap_device_build_ss(const char *pdev_name,
-						    int pdev_id,
-						    struct omap_hwmod **ohs,
-						    int oh_cnt, void *pdata,
-						    int pdata_len)
-{
 	int ret = -ENOMEM;
 	struct platform_device *pdev;
 	struct omap_device *od;
 
-	if (!ohs || oh_cnt == 0 || !pdev_name)
+	if (!oh || !pdev_name)
 		return ERR_PTR(-EINVAL);
 
 	if (!pdata && pdata_len > 0)
 		return ERR_PTR(-EINVAL);
 
+	if (strncmp(oh->name, "smartreflex", 11) &&
+	    strncmp(oh->name, "dma", 3)) {
+		pr_warn("%s need to update %s to probe with dt\na",
+			__func__, pdev_name);
+		ret = -ENODEV;
+		goto odbs_exit;
+	}
+
 	pdev = platform_device_alloc(pdev_name, pdev_id);
 	if (!pdev) {
 		ret = -ENOMEM;
@@ -591,7 +506,16 @@ struct platform_device __init *omap_device_build_ss(const char *pdev_name,
 	else
 		dev_set_name(&pdev->dev, "%s", pdev->name);
 
-	od = omap_device_alloc(pdev, ohs, oh_cnt);
+	/*
+	 * Must be called before omap_device_alloc() as oh->od
+	 * only contains the currently registered omap_device
+	 * and will get overwritten by omap_device_alloc().
+	 */
+	ret = omap_device_copy_resources(oh, pdev);
+	if (ret)
+		goto odbs_exit1;
+
+	od = omap_device_alloc(pdev, &oh, 1);
 	if (IS_ERR(od))
 		goto odbs_exit1;